Service difficulty report · Thermocouple · Boeing 737*

Difficulty date
February 9, 2022
Submitted
February 14, 2022
Operation
Air carrier
Aircraft
N259WN
Make and model
Boeing 737*
Aircraft serial
35554
Aircraft time
52,019 hours, 31,013 cycles
Part
Thermocouple
Part number
TC29602
Part serial
BN190357
Condition
Faulty
Location
#1 Engine
Stage of operation
AP
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AFTER T.O. APPROXIMATELY 200 FT NOTICED #1 ENGINE APPROACHING REDLINE ON EGT. THIS WAS A REDUCED THRUST T.O. HAD TO MANUALLY REDUCE THRUST TO KEEP FROM EXCEEDING EGT LIMIT. ALL OTHER ENGINE PARAMETERS APPEARED NORMAL. / [01] PERFORMED FIM TASK 71-06 TASK 807. FOUND T49.5 S4 HIGH RESISTANCE. REPLACED T49.5 S4 THERMOCOUPLE. OPS CKS GOOD PER MM 77-21-01